Stepper Motors, easy to control
With a stepper motor a full rotation of the motor is divided in several steps. The motor can be turned stepwise and allows a stop and hold at a position related to each of these steps. There is no necessary sensor feedback of the position needed. The position can be calculated on the base of counting the steps which were done. Robotics, home automation and 3D printing are the typical industrial applications where stepper motors are used. In automotive light leveling, HVAC flap control and mirror adjustment are applications which are addressed by using stepper motors.
Infineon’s solution for driving stepper motors consists of several drivers capable to drive bipolar stepper motors. Besides these dedicated drivers other multi-half bridge and H-bridge drivers can be used for driving e.g. more powerful stepper motors.
The Infineon low-current motor bridge family consists of a broad variety of bridges for stepper and DC brush motors including servo motors.
The products are offered with protection features as well as diagnosis. Depending on the product type the protection ranges from basic protection against overtemperature to a full set of protection against open-load, overvoltage, undervoltage, overtemperature and short-circuit. The diagnosis capabilities range from a simple status flag to communication via a 16-bit SPI.
- Stepper Motors in automotive and industrial applications
- Idle speed control
- Light leveling
- Automotive dashboard (gauge leveling)
- HVAC flaps
- Seat adjustment
- Throttle flap
- Mirror control
Block Diagram of a stepper motor application
Depending on specific circumstances and boundary conditions, customers choose their optimal system-design. Most relevant are:
- Voltage supply
- Uni- or bipolar motor
- Power requirements
- Space constrains
Automotive motor drives system solutions
Infineon provides such semiconductor solutions and steadily extends the portfolio of semiconductors needed for smart and modern Motor Control, such as MOSFETs, Bridge Drivers, Integrated Bridges, Smart Power Controllers, Microcontrollers and Sensors.
TLE94xyz DC motor driver family
The TLE94xyz are protected half-bridge drivers designed for automotive motion control applications such as small DC motors for Heating, Ventilation and Air Conditioning (HVAC), as well as mirror adjustment and fold.
Full- or h-bridges - TLE920x family
TLE9201SG and TLE9202ED are general-purpose 6A H-Bridges designed for the control of small DC motors and inductive loads. They meet the harsh automotive environmental conditions and are qualified in accordance with the AEC-Q100 standard.